#include "widget.h"
#include "ui_widget.h"
#include <QMessageBox>
#include <QNetworkDatagram>
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    socket = new QUdpSocket(this);
    this->setWindowTitle("客户端");
    connect(socket,&QUdpSocket::readyRead,this,&Widget::processRequest);
    bool ret = socket->bind(QHostAddress::Any,9090);
    if(!ret)
    {
        QMessageBox::critical(this,"服务器启动失败",socket->errorString());
        return ;
    }

}

Widget::~Widget()
{
    delete ui;
}

void Widget::processRequest()
{
    const QNetworkDatagram& requestDatagram = socket->receiveDatagram();
    QString request = requestDatagram.data();
    const QString& response = process(request);
    QNetworkDatagram responseDatagram(response.toUtf8(),requestDatagram.senderAddress(),requestDatagram.senderPort());
    socket->writeDatagram(responseDatagram);
    QString log = "[" + requestDatagram.senderAddress().toString() + ":" + QString::number(requestDatagram.senderPort())
             + "]  req: " + request + ",resp + :" + response;
    ui->listWidget->addItem(log);
}

QString Widget::process(const QString &request)
{
    return request;
}

